Vortex spring detection device

Abstract

The invention discloses a vortex spring detection device. The vortex spring detection device comprises a base plate, a central shaft, a permanent magnet rotor, an outer cylinder, a limiting pin and a controller. The vortex line spring is placed in the containing cavity of the permanent magnet rotor, the outer hook of the vortex line spring is clamped into the second clamping groove, then the permanent magnet rotor with the vortex line spring is arranged on the center shaft in a sleeving mode, the inner hook of the vortex line spring is clamped into the first clamping groove, the rotor cover is covered, the permanent magnet rotor is manually rotated for two circles in the screwing direction of the vortex line spring, and the vortex line spring is clamped into the second clamping groove. The position is fixed through the limiting pin, the permanent magnet rotor is sleeved with the outer cylinder, the outer cylinder is fixed to the base plate, the controller intermittently supplies power to the two coils, and the permanent magnet rotor at least rotates from the starting position to the ending position according to the duration time of each time of power-on. Each power-off duration at least causes the permanent magnet rotor to rotate from an end position to an initial position. According to the vortex spring detection device, the installation steps are simplified, automation is achieved, and therefore the operation process is time-saving, labor-saving, safe and efficient.

Description

Technical Field

[0001] The present application relates to the technical field of incoming material detection equipment, and in particular to a vortex spring detection device. Background Art

[0002] The vortex spring directly determines the performance of the safety mechanism. The inspection method for the vortex spring performance stipulates: first tighten the vortex spring 1 to 2 turns, then rotate it from the first position to the second position, and then return it from the second position to the first position. The rotation angle between the first position and the second position is 70°-80°. A total of 150 reciprocating times are required. Then measure the relevant performance of the vortex spring. Those that do not meet the performance standards will be treated as unqualified products.

[0003] In the prior art, screening devices have numerous screws, requiring multiple screws to be installed and removed for each vortex spring. Since the vortex spring must reciprocate 150 times, the overall coordination of the screening device is highly demanding. During the installation process, it is crucial to ensure that each screw is tightened. Otherwise, the vibration generated by the screening vortex spring can cause it to burst, damaging the vortex spring product or causing personal injury. Consequently, prior art screening devices are time-consuming and labor-intensive, unsafe to operate, and place high demands on the operator. Summary of the Invention

[0004] The present application provides a vortex spring detection device that can solve the technical problems of the prior art vortex spring detection device, such as being time-consuming and labor-intensive to use, unsafe to operate, and requiring high operator requirements. The technical solution is as follows:

[0005] The vortex spring is in a planar spiral shape, and has a first end at the center of the spiral and a second end outside the spiral, the first end has an inner hook, and the second end has an outer hook.

[0006] The vortex spring detection device includes: a base plate, a central shaft, a permanent magnet rotor, an outer cylinder, a limit pin, and a vertical central shaft fixedly connected to the center of the controller base plate. The central shaft has a first retaining groove for securing the inner hook. The permanent magnet rotor has an upwardly open accommodating cavity in the center, which is used to accommodate the vortex spring. The cavity wall is provided with a second retaining groove for securing the outer hook. The cavity bottom has a bottom hole for the central shaft to pass through. The permanent magnet rotor is rotatably mounted on the base plate through the bottom hole. The permanent magnet rotor is provided with a first pin hole parallel to the central axis of the permanent magnet rotor.

[0007] The outer cylinder includes a cylinder body and a cylinder bottom connected to one end of the cylinder body. The inner wall of the cylinder is provided with two iron cores protruding into the outer cylinder. A coil is sleeved on each iron core. The coil and the iron core are used to form an electromagnet; the outer cylinder is sleeved on the outside of the permanent magnet rotor with its opening facing downward and is detachably connected to the base plate; a limit pin is movably provided in the first pin hole, and the length of the limit pin is greater than the height of the permanent magnet rotor; the controller is electrically connected to the two coils respectively.

[0008] The permanent magnet rotor has a starting position and an ending position, and an arc-shaped groove with the central axis as the rotation center is provided on the upper surface of the base plate; when the permanent magnet rotor is in the starting position, the limit pin is located at the first end of the arc-shaped groove; the permanent magnet rotor has a first center plane S1 parallel to the direction of the line connecting the N pole to the S pole and passing through the central axis of the permanent magnet rotor, and the base plate has a second center plane S2 connecting the two iron cores and passing through the central axis of the cylinder; when the permanent magnet rotor is in the starting position, there is a second center plane S2 in the clockwise direction between the first center plane and the second center plane. an angle ∠A, where 0°<∠A≤10°; and when the permanent magnet rotor is in the end position, a second angle ∠B is provided between the first center plane and the second center plane in a clockwise direction, where 50°≤∠B<90°; wherein the controller is configured to intermittently connect direct current to the two coils so that the iron core and the coil form an electromagnet that generates a repulsive force with the permanent magnet rotor, and each power-on duration is sufficient to allow the permanent magnet rotor to rotate from an initial position to a end position, and each power-off duration is sufficient to allow the permanent magnet rotor to rotate from the end position to the initial position.

[0009] Optionally, the central angle corresponding to the arc-shaped slot is a second angle ∠B, and when the permanent magnet rotor is in the end position, the limit pin is located at the second end of the arc-shaped slot.

[0010] Optionally, a rotor cover is detachably connected to the upper end of the permanent magnet rotor, and the central axis of the rotor cover is collinear with the central axis of the permanent magnet rotor; a second pin hole matching the first pin hole is provided on the rotor cover.

[0011] Optionally, the upper surface of the permanent magnet rotor has at least two positioning pins, and the rotor cover has a third pin hole matching the two positioning pins.

[0012] Optionally, the base plate has a pair of first clamping plates evenly distributed on the outside of the base plate, each of the first clamping plates has a third clamping slot, and the slot wall of the third clamping slot has a first locking hole; the cylinder body has a pair of second clamping plates evenly distributed on the outer wall of the cylinder body, the clamping plates can be clamped into the third clamping slot, and the second clamping plates have a second locking hole corresponding to the first locking hole; the vortex spring detection device also includes two locking pins, which are used to insert into the first locking hole and the second locking hole to lock the outer cylinder and the base plate.

[0013] Optionally, the controller includes a PLC controller.

[0014] Optionally, a screw hole is provided at the end of the cylinder body facing the cylinder bottom, a through hole corresponding to the screw hole is provided on the cylinder bottom, and the cylinder bottom is fixedly connected to the end of the cylinder body by a screw.

[0015] Optionally, the vortex spring detection device further includes a support cylinder, which is sleeved on the central axis and located between the permanent magnet rotor and the base plate.

[0016] Optionally, a circular boss is provided on one side of the center of the cylinder bottom facing the rotor cover.

[0017] Optionally, a circular groove is provided on a side of the rotor cover facing the cylinder bottom, and an annular rib that can be inserted into the circular groove is provided on the circular boss.

[0018] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0019] The vortex spring testing device includes a base plate, a central shaft, a permanent magnet rotor, an outer cylinder, a limit pin, and a controller. When testing the vortex spring, the outer cylinder is first removed, and the outer hook at the second end of the vortex spring is engaged with the second slot. The permanent magnet rotor with the vortex spring is then placed on the central shaft, with the inner hook at the first end of the vortex spring engaged with the first slot. The permanent magnet rotor is manually rotated two turns in the direction in which the vortex spring is tightened, and the position is fixed with the limit pin. The outer cylinder is then placed over the permanent magnet rotor and secured to the base plate. The controller intermittently supplies power to the two coils for a duration of at least 10 seconds, and a power-off duration of 10 seconds, ensuring that the permanent magnet rotor rotates from the starting position to the ending position, and that the power-off duration is sufficient to allow the permanent magnet rotor to rotate from the ending position to the initial position. During power supply, the iron core and coil form an electromagnet. At the starting position, the first center plane S1 of the permanent magnet rotor and the second center plane S2 of the base plate form a clockwise first angle ∠A, indicating that the electromagnet and permanent magnet rotor are misaligned. At this point, energizing the coil generates magnetism in the iron core, generating a repulsive force between the ends of the electromagnet and the permanent magnet rotor, driving the permanent magnet rotor to rotate in the direction of increasing the first angle ∠A. When the permanent magnet rotor rotates to the second angle ∠B, the controller cuts off the current, de-energizing the electromagnet, and the permanent magnet rotor rotates in the opposite direction to its initial position under the restoring force of the vortex spring. The controller repeatedly energizes and de-energizes the coil 150 times to complete the vortex spring reciprocating test. Compared with the vortex spring detection device in the prior art, the vortex spring detection device of the present application does not use screws, which simplifies the installation steps. The vortex spring is in the outer cylinder during the test, which prevents the vortex spring from bursting and injuring people. Since the controller automatically powers on and off, automation is achieved, so the operation process is time-saving, labor-saving, safe and efficient.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 It is a top view of the vortex spring;

[0023] Figure 2 is an assembly diagram of a vortex spring detection device provided in an embodiment of the present application;

[0024] Figure 3 yes Figure 2Exploded diagram of the vortex spring detection device;

[0025] Figure 4 yes Figure 2 A longitudinal section of the vortex spring detection device;

[0026] Figure 5 yes Figure 3 A three-dimensional view of the rotor cover of the vortex spring detection device;

[0027] Figure 6 yes Figure 3 A three-dimensional view of the bottom of the outer cylinder in the vortex spring detection device;

[0028] Figure 7 is a three-dimensional diagram of a base plate in a vortex spring detection device provided in an embodiment of the present application;

[0029] Figure 8 is a top view of a base plate in a vortex spring detection device provided in an embodiment of the present application;

[0030] Figure 9 is a three-dimensional diagram of the central axis of the vortex spring detection device provided in an embodiment of the present application;

[0031] Figure 10 is a three-dimensional diagram of a permanent magnet rotor in a vortex spring detection device provided in an embodiment of the present application;

[0032] Figure 11 is a top view of the outer cylinder in the vortex spring detection device provided in an embodiment of the present application;

[0033] Figure 12 is a partial cross-sectional view of the outer cylinder in the vortex spring detection device provided in an embodiment of the present application;

[0034] Figure 13 1 is a top view of the permanent magnet rotor in the vortex spring detection device provided by an embodiment of the present application when it is in an initial position;

[0035] Figure 14 This is a top view of the permanent magnet rotor in the vortex spring detection device provided by an embodiment of the present application when it is in the end position.

[0036] Description of Reference Numerals

[0037] 1-vortex spring; 101-inner hook; 102-outer hook; 2-base plate; 201-arc groove; 202-first clamping plate; 203-third clamping slot; 204-first locking hole; 3-center axis; 301-first clamping slot; 4-permanent magnet rotor; 401-second clamping slot; 402-bottom hole; 403-first pin hole; 404-locating pin; 5-outer cylinder; 501-cylinder body; 502-cylinder bottom; 5021-circular boss; 5022-annular rib; 503-iron core; 504-coil; 505-second clamping plate; 506-second locking hole; 6-limiting pin; 7-rotor cover; 701-second pin hole; 702-third pin hole; 703-annular groove; 8-locking pin; 9-support cylinder. DETAILED DESCRIPTION

[0038] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0039] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" generally refer to the relative positions of the corresponding components in the direction of gravity when in use. "Inside" and "outside" refer to the relative positions of the corresponding components themselves. Furthermore, the terms "first" and "second" used in this disclosure are intended to distinguish one element from another and do not convey sequential or significant meanings. In the following description, when referring to the drawings, unless otherwise indicated, identical reference numerals in different drawings indicate identical or similar elements.

[0040] refer to Figure 1 The vortex spring 1 is in a planar spiral shape, and has a first end at the center of the spiral and a second end outside the spiral. The first end has an inner hook 101 and the second end has an outer hook 102.

[0041] According to the embodiments of this application, reference Figures 2 to 14 As shown, the vortex spring 1 detection device includes: a base plate 2, a central shaft 3, a permanent magnet rotor 4, an outer cylinder 5, a limit pin 6, and a controller.

[0042] Among them, reference Figures 3 to 9 A vertical central shaft 3 is fixedly connected to the middle of the base plate 2 , and the central shaft 3 has a first slot 301 for securing the inner hook 101 .

[0043] refer to Figure 10As shown, the permanent magnet rotor 4 has an upwardly open accommodating cavity in the middle, which is used to accommodate the vortex spring 1. A second clamping groove 401 for clamping the outer hook 102 is provided on the cavity wall of the accommodating cavity; the cavity bottom of the accommodating cavity has a bottom hole 402 for the central axis 3 to pass through; the permanent magnet rotor 4 is rotatably sleeved on the base plate 2 through the bottom hole 402; the permanent magnet rotor 4 is provided with a first pin hole 403 parallel to the central axis 3 of the permanent magnet rotor 4.

[0044] refer to Figure 3 、 Figure 11 and Figure 12 As shown, the outer cylinder 5 includes a cylinder body 501 and a cylinder bottom 502 connected to one end of the cylinder body 501. The inner wall of the cylinder body 501 is provided with two iron cores 503 protruding into the outer cylinder 5. A coil 504 is sleeved on each iron core 503. The coil 504 and the iron core 503 are used to form an electromagnet; the outer cylinder 5 is sleeved on the outside of the permanent magnet rotor 4 with its opening facing downward and is detachably connected to the base plate 2.

[0045] refer to Figure 3 and Figure 4 As shown, the limiting pin 6 is movably disposed in the first pin hole 403, and the length of the limiting pin 6 is greater than the height of the permanent magnet rotor 4. The controller is electrically connected to the two coils 504 respectively.

[0046] According to the embodiments of this application, reference Figure 13 and Figure 14 As shown, the permanent magnet rotor 4 has a starting position and an ending position, and the upper surface of the base plate 2 is provided with an arcuate groove 201 with the central axis 3 as the rotation center; when the permanent magnet rotor 4 is in the starting position, the limit pin 6 is located at the first end of the arcuate groove 201; the permanent magnet rotor 4 has a first center plane S1 parallel to the direction of the line connecting the N pole to the S pole and passing through the center axis 3 of the permanent magnet rotor 4, and the base plate 2 has a second center plane S2 connecting the two iron cores 503 and passing through the center axis 3 of the cylinder 501; when the permanent magnet rotor 4 is in the starting position, there is a clockwise rotation between the first center plane and the second center plane. A first included angle ∠A in the clockwise direction is defined, wherein 0°<∠A≤10°; when the permanent magnet rotor 4 is in the end position, a second included angle ∠B in the clockwise direction is defined between the first center plane and the second center plane, wherein 50°≤∠B<90°; wherein the controller is configured to intermittently connect direct current to the two coils 504 so that the iron core 503 and the coil 504 form an electromagnet that generates a repulsive force with the permanent magnet rotor 4, and each power-on duration is sufficient to allow the permanent magnet rotor 4 to rotate from the initial position to the end position, and each power-off duration is sufficient to allow the permanent magnet rotor 4 to rotate from the end position to the initial position under the restoring force of the spring.

[0047] When testing the vortex spring 1, first remove the outer cylinder 5, place the vortex spring 1 into the accommodating cavity of the permanent magnet rotor 4, and make the outer hook 102 of the second end of the vortex spring 1 snap into the second slot 401, then put the permanent magnet rotor 4 with the vortex spring 1 on the central shaft 3, and make the inner hook 101 of the first end of the vortex spring 1 snap into the first slot 301, manually rotate the permanent magnet rotor 4 two turns in the direction of tightening the vortex spring 1, fix the position by the limit pin 6, put the outer cylinder 5 on the outside of the permanent magnet rotor 4 and fix it to the base plate 2, and the controller intermittently supplies power to the two coils 504 for a duration and a power-off duration. The power-on duration of each time must be sufficient to at least rotate the permanent magnet rotor 4 from the starting position to the end position, and the power-off duration of each time must be sufficient to rotate the permanent magnet rotor 4 from the end position to the initial position. During power supply, the iron core 503 and coil 504 form an electromagnet. At the initial position, the first center plane S1 of the permanent magnet rotor 4 and the second center plane S2 of the base plate 2 form a first clockwise angle ∠A, indicating that the electromagnet and permanent magnet rotor 4 are misaligned. At this point, when coil 504 is energized, the iron core 503 generates magnetism, generating a repulsive force between the ends of the electromagnet and the ends of the permanent magnet rotor 4, thereby driving the permanent magnet rotor 4 to rotate in the direction of increasing the first angle ∠A. When the permanent magnet rotor 4 rotates to the second angle ∠B, the controller controls the current to be cut off, de-energizing the electromagnet. The permanent magnet rotor 4 rotates in the opposite direction to its initial position under the restoring force of the vortex spring 1. The controller repeatedly energizes and de-energizes coil 504 150 times, completing a 150-cycle test of the vortex spring 1.

[0048] In other embodiments, the limit pin 6 has a pin cap with a diameter larger than the pin rod at one end facing the bottom 502 of the cylinder. The length of the limit pin 6 must be such that after being inserted into the first pin hole 403 of the permanent magnet rotor 4, the pin head is in the arc groove 201 but does not contact the bottom of the arc groove 201.

[0049] refer to Figure 13 and Figure 14 In the above embodiment, specifically in the initial position, the mover has a slight offset relative to the base plate, which is a first angle ∠A rotated in the clockwise direction. In this way, when the two coils are energized, the iron core forms an electromagnet. Due to the repulsive force generated between the end of the iron core and the rotor, the permanent magnet rotor 4 will rotate in the direction that increases the first angle ∠A (i.e., clockwise).

[0050] Compared with the vortex spring detection device in the prior art, the vortex spring detection device of the present application does not use screws, which simplifies the installation steps. The vortex spring 1 is in the outer cylinder 5 during the test, which prevents the vortex spring 1 from bursting and injuring people. Since the controller automatically powers on and off, automation is achieved, so the operation process is time-saving, labor-saving, safe and efficient.

[0051] According to the embodiments of this application, reference Figure 7 and Figure 8 As shown, the central angle corresponding to the arcuate slot 201 is the second included angle ∠B. When the permanent magnet rotor 4 is in the final position, the stop pin 6 is located at the second end of the arcuate slot 201. Because the central angle corresponding to the arcuate slot 201 is equal to the second included angle between the first and second center planes of the permanent magnet rotor in the final state, after the coil 504 is de-energized, there is no electromagnetic force when the vortex spring 1 returns to its initial position.

[0052] According to the embodiments of this application, reference Figure 3 and Figure 4 As shown, in order to prevent the vortex spring 1 in the permanent magnet rotor 4 from flying out and injuring people, the rotor cover 7 is detachably connected to the upper end of the permanent magnet rotor 4, and the central axis 3 of the rotor cover 7 is collinear with the central axis 3 of the permanent magnet rotor 4; the rotor cover 7 is provided with a second pin hole 701 that matches the first pin hole 403. At this time, the length of the limit pin 6 must be greater than the sum of the height of the rotor cover 7 and the height of the permanent magnet rotor 4. When in use, the limit pin 6 is inserted into the second pin hole 701 and the first pin hole 403 in sequence. In other embodiments, the length of the limit pin 6 must be such that when the rotor cover 7 is installed on the permanent magnet rotor 4, the limit pin 6 protrudes from the rotor cover 7. In this way, when the vortex spring detection test is completed, the staff can pinch the tail of the limit pin 6 to pull it out.

[0053] According to the embodiments of this application, reference Figure 10 As shown, the upper surface of the permanent magnet rotor 4 has at least two positioning pins 404, referring to Figure 5 As shown, the rotor cover 7 has second pin holes 701 that match the two positioning pins 404. This allows the rotor cover 7 to rotate with the permanent magnet rotor 4. In other embodiments, the length of the positioning pins 404 can be such that, when the rotor cover 7 is mounted on the permanent magnet rotor 4, they protrude beyond the rotor cover 7, making it easier for personnel to rotate the permanent magnet rotor 4.

[0054] According to the embodiments of this application, reference Figure 7 As shown, the base plate 2 has a pair of first clamping plates 202 evenly distributed on the outside of the base plate 2, each of the first clamping plates 202 has a third clamping slot 203, and the slot wall of the third clamping slot 203 has a first locking hole 204. Figure 11 and Figure 12As shown, the cylinder 501 has a pair of second retaining plates 505 evenly distributed on the outer wall of the cylinder 501. The retaining plates can be inserted into the third retaining groove 203. The second retaining plates 505 have second locking holes 506 corresponding to the first locking holes 204. The vortex spring 1 detection device also includes two locking pins 8, which are used to be inserted into the first locking holes 204 and the second locking holes 506 to lock the outer cylinder 5 and the base plate 2. In other embodiments, other quick locking structures may also be used, such as quick locking buckles, and this application is not limited to this.

[0055] According to an embodiment of the present application, the controller comprises a PLC controller. A PLC controller is a digital computing electronic system designed specifically for use in industrial environments. It uses a programmable memory to store instructions for performing operations such as logic operations, sequential control, timing, counting, and arithmetic operations. It controls various types of mechanical equipment or production processes through digital or analog input and output.

[0056] According to the embodiments of this application, reference Figure 3 As shown, a screw hole is provided at the end of the cylinder 501 facing the cylinder bottom 502, and a through hole corresponding to the screw hole is provided on the cylinder bottom 502. The cylinder bottom 502 is fixedly connected to the end of the cylinder 501 by screws.

[0057] According to the embodiments of this application, reference Figure 4 As shown, the vortex spring 1 detection device further includes a support cylinder 9, which is sleeved on the central shaft 3 and located between the permanent magnet rotor 4 and the base plate 2. The provision of the support cylinder 9 can form a gap between the permanent magnet rotor 4 and the base plate 2, thereby reducing the friction between the permanent magnet rotor 4 and the base plate 2.

[0058] According to the embodiments of this application, reference Figure 4 and Figure 6 As shown, a circular boss 5021 is provided on one side of the center of the cylinder bottom 502 facing the rotor cover 7. The circular boss 5021 can be used to prevent the permanent magnet rotor 4 from moving away from the base plate 2 during rotation.

[0059] According to the embodiments of this application, reference Figure 5 and Figure 6As shown, the rotor cover 7 is provided with a circular groove 703 on the side facing the cylinder bottom 502, and the circular boss 5021 is provided with an annular rib 5022 that can be inserted into the annular groove 703. Thus, when the outer cylinder 5 is sleeved outside the permanent magnet rotor 4, the annular rib 5021 of the cylinder bottom 502 engages with the annular groove 703 of the rotor cover 7, which can limit the rotor cover 7 and ensure high coaxiality between the rotor cover 7 and the permanent magnet rotor 4 during rotation.

[0060] refer to Figure 3 and Figure 4 The following describes the working principle of the vortex spring 1 detection device of the present application in combination with specific operating steps:

[0061] The first step is to open and remove the outer cylinder 5, insert the outer hook 102 of the vortex spring 1 into the second slot 401 of the permanent magnet rotor 4, then sleeve the permanent magnet rotor 4 with the vortex spring onto the central shaft 3, and insert the inner hook 101 at the first end of the vortex spring into the first slot 301 of the central shaft 3. The rotor cover 7 is buckled onto the permanent magnet rotor 4, and the two positioning pins 404 on the permanent magnet rotor 4 are inserted into the two third pin holes 702 on the rotor cover 7.

[0062] In the second step, manually rotate the vortex spring 1 two turns in the tightening direction, then sequentially pass the limit pin 6 through the second pin hole 701 of the rotor cover 7 and the first pin hole 403 of the permanent magnet rotor 4, and then insert it into the arc-shaped slot 201. At this time, release the pin 6. Since the limit pin 6 is blocked at the first end of the arc-shaped slot 201, the permanent magnet rotor 4 cannot rotate under the restoring force of the vortex spring 1.

[0063] Step 3: Put the outer cylinder 5 on the permanent magnet rotor 4, and insert the second clamping plate 505 of the outer cylinder 5 into the third clamping groove 203 of the base plate 2, and insert the locking pin 8 into the first locking hole 204 and the second locking hole 506 at the same time;

[0064] The fourth step is to turn on the power supply. Under the control of the PLC controller, DC power is intermittently supplied to the coil 504. During each power supply process, the coil 504 and the electromagnet form an electromagnet, and the end of the electromagnet close to the permanent magnet rotor 4 has the same polarity as the permanent magnet rotor 4, which will generate repulsive force.

[0065] Since the first center plane S1 of the permanent magnet rotor 4 and the second center plane of the base plate 2 have a first clockwise angle ∠A when the rotor is in its initial position, that is, there is a misalignment between the permanent magnet rotor 4 and the base plate 2, and under the action of the repulsive force, the permanent magnet rotor 4 will rotate in the direction of increasing the first angle ∠A, thereby driving the vortex spring 1 to continue rotating in the tightening direction. During the rotation of the permanent magnet rotor 4, the electromagnetic force gradually decreases and gradually reaches a balance with the restoring force of the vortex spring 1. At this time, the PLC controller controls the power supply to stop supplying power to the coil 504, the electromagnetic force of the iron core 503 disappears, and under the restoring force of the vortex spring 1, the permanent magnet rotor 4 rotates in the opposite direction to the initial position. In this way, the PLC controller is powered on and off again 150 times to complete the 150-cycle rotation test of the vortex spring 1.

[0066] The fifth step is to pull out the locking pin 8, open and remove the outer cylinder 5, remove the rotor cover 7 from the permanent magnet rotor 4, take out the vortex spring 1, and check the various performances of the vortex spring 1. If the various performances still meet the conditions after the test, the vortex spring 1 is judged to be qualified, otherwise it is judged to be unqualified.

[0067] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0068] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0069] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A vortex spring detection device, wherein the vortex spring (1) is in a planar spiral shape, the vortex spring (1) has a first end at the center of the spiral and a second end outside the spiral, the first end has an inner hook (101), and the second end has an outer hook (102), characterized in that: The vortex spring (1) detection device comprises: A base plate (2) is fixedly connected to a vertical central shaft (3) in the middle thereof, wherein the central shaft (3) has a first clamping groove (301) for clamping the inner hook (101); The permanent magnet rotor (4) has an upwardly open accommodating cavity in the middle, the accommodating cavity is used to accommodate the vortex spring (1), and a second clamping groove (401) for clamping the outer hook (102) is provided on the cavity wall of the accommodating cavity; the cavity bottom of the accommodating cavity has a bottom hole (402) for the central axis (3) to pass through; the permanent magnet rotor (4) is rotatably sleeved on the central axis (3) of the base plate (2) through the bottom hole (402); the permanent magnet rotor (4) is provided with a first pin hole (403) parallel to the central axis (3) of the permanent magnet rotor (4); The outer cylinder (5) comprises a cylinder body (501) and a cylinder bottom (502) connected to one end of the cylinder body (501); the inner wall of the cylinder body (501) is provided with two iron cores (503) protruding into the outer cylinder (5); each iron core (503) is sleeved with a coil (504); the coil (504) and the iron core (503) are used to form an electromagnet; the outer cylinder (5) is sleeved on the outside of the permanent magnet rotor (4) with its opening facing downward and is detachably connected to the base plate (2); a limit pin (6) movably disposed in the first pin hole (403), wherein the length of the limit pin (6) is greater than the height of the permanent magnet rotor (4); and a controller, the controller being electrically connected to the two coils (504) respectively; The permanent magnet rotor (4) has a starting position and an ending position, and the upper surface of the base plate (2) is provided with an arc-shaped groove (201) with the central axis (3) as the rotation center; When the permanent magnet rotor (4) is in the starting position, the limiting pin (6) is located at the first end of the arc-shaped slot (201); The permanent magnet rotor (4) has a first center plane S1 that is parallel to the direction of the line connecting the N pole to the S pole and passes through the center axis (3) of the permanent magnet rotor (4); the base plate (2) has a second center plane S2 that connects the two iron cores (503) and passes through the center axis (3) of the cylinder (501); When the permanent magnet rotor (4) is at the starting position, a first included angle ∠A is formed between the first center plane and the second center plane in the clockwise direction, wherein 0°<∠A≤10°; when the permanent magnet rotor (4) is at the ending position, a second included angle ∠B is formed between the first center plane and the second center plane in the clockwise direction, wherein 50°≤∠B<90°; The controller is used for intermittently connecting direct current to the two coils (504), so that the iron core (503) and the coil (504) form an electromagnet that generates a repulsive force with the permanent magnet rotor (4), and each power-on duration is sufficient to allow the permanent magnet rotor (4) to rotate from an initial position to an end position, and each power-off duration is sufficient to allow the permanent magnet rotor (4) to rotate from the end position to the initial position.

2. The vortex spring detection device according to claim 1, characterized in that: The central angle corresponding to the arc-shaped slot (201) is a second included angle ∠B, and when the permanent magnet rotor (4) is at the end position, the limit pin (6) is located at the second end of the arc-shaped slot (201).

3. The vortex spring detection device according to claim 2, characterized in that: The vortex spring detection device further comprises a rotor cover (7) which is detachably connected to the upper end of the permanent magnet rotor (4), and the central axis (3) of the rotor cover (7) is collinear with the central axis (3) of the permanent magnet rotor (4); and a second pin hole (701) matching the first pin hole (403) is provided on the rotor cover (7).

4. The vortex spring detection device according to claim 3, characterized in that: The upper surface of the permanent magnet rotor (4) is provided with at least two positioning pins (404), and the rotor cover (7) is provided with a third pin hole (702) matching the two positioning pins (404).

5. The vortex spring detection device according to claim 4, characterized in that: The base plate (2) has a pair of first clamping plates (202) evenly distributed on the outside of the base plate (2), each of the first clamping plates (202) has a third clamping slot (203), and the slot wall of the third clamping slot (203) has a first locking hole (204); The cylinder (501) has a pair of second clamping plates (505) evenly distributed on the outer wall of the cylinder (501), the clamping plates can be clamped into the third clamping slot (203), and the second clamping plates (505) have second locking holes (506) corresponding to the first locking holes (204); The vortex spring (1) detection device further comprises two locking pins (8), which are used to be inserted into the first locking hole (204) and the second locking hole (506) to lock the outer cylinder (5) and the base plate (2).

6. The vortex spring detection device according to any one of claims 1 to 5, characterized in that: The controller includes a PLC controller.

7. The vortex spring detection device according to claim 1, characterized in that: The end of the cylinder (501) facing the cylinder bottom (502) is provided with a screw hole, and the cylinder bottom (502) is provided with a through hole corresponding to the screw hole. The cylinder bottom (502) is fixedly connected to the end of the cylinder (501) by screws.

8. The vortex spring detection device according to claim 1, characterized in that: The vortex spring detection device further comprises a support cylinder (9), which is sleeved on the central shaft (3) and located between the permanent magnet rotor (4) and the base plate (2).

9. The vortex spring detection device according to claim 3, characterized in that: A circular boss (5021) is provided on one side of the center of the cylinder bottom (502) facing the rotor cover (7).

10. The vortex spring detection device according to claim 9, characterized in that: A circular annular groove (703) is provided on the side of the rotor cover (7) facing the cylinder bottom (502), and an annular rib (5022) capable of being inserted into the annular groove (703) is provided on the circular boss (5021).

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